Computer Networks · Data Link Layer
Official IIT answer key · IISc Bangalore · Audited Aug 2026
GATE CSE 2016 Set 2 Q24 · MCQ · 1 mark
Key concept
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Topic notes
Medium Access Control (MAC) in GATE CS is predominantly tested through quantitative numerical problems and conceptual protocol comparisons. The focus is split between random access protocols (CSMA/CD collision detection constraints and slotted ALOHA transmission probabilities), controlled access (Token Ring round-trip delays and token holding limits), and wireless MAC protocols (IEEE 802.11 CSMA/CA features, channels, and ACK mechanisms). Most questions carry 2 marks and appear in NAT format requiring unit conversions.
Full Data Link Layer guide →In an Ethernet local area network, which one of the following statements is TRUE? (A) A station stops to sense the channel once it starts transmitting a frame. (B) The purpose of the jamming signal is to pad the frames that are smaller than the minimum frame size. (C) A station continues to transmit the packet even after the collision is detected. (D) The exponential backoff mechanism reduces the probability of collision on retransmissions.
Topic-wise GATE CS PYQs with verified steps
Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.
